public static SubnetInfo CalculateIPv4Subnet(IPAddress ipv4Address, IPAddress subnetmask)
{
IPAddress networkAddress = SubnetHelper.GetIPv4NetworkAddress(ipv4Address, subnetmask);
IPAddress broadcast = SubnetHelper.GetIPv4Broadcast(ipv4Address, subnetmask);
int cidr = SubnetmaskHelper.ConvertSubnetmaskToCidr(subnetmask);
int totalIPs = SubnetmaskHelper.GetNumberIPv4Addresses(cidr);
return(new SubnetInfo
{
NetworkAddress = networkAddress,
Broadcast = broadcast,
TotalIPs = totalIPs,
Subnetmask = subnetmask,
CIDR = cidr,
HostFirstIP = IPv4AddressHelper.IncrementIPv4Address(networkAddress, 1),
HostLastIP = IPv4AddressHelper.DecrementIPv4Address(broadcast, 1),
HostIPs = totalIPs - 2
});
}
public static SubnetInfo CalculateIPv4Subnet(IPAddress ipv4Address, IPAddress subnetmask)
{
IPAddress networkAddress = SubnetHelper.GetIPv4NetworkAddress(ipv4Address, subnetmask);
IPAddress broadcast = SubnetHelper.GetIPv4Broadcast(ipv4Address, subnetmask);
int cidr = SubnetmaskHelper.ConvertSubnetmaskToCidr(subnetmask);
long totalIPs = SubnetmaskHelper.GetNumberIPv4Addresses(cidr);
// Fix bug when /31 (host first/last can be null)
IPAddress hostFirstIP = null;
IPAddress hostLastIP = null;
long hostIPs = 0;
if (totalIPs == 1) // Fix bug when /32 (show range for 1 IP)
{
hostFirstIP = networkAddress;
hostLastIP = broadcast;
hostIPs = 0;
}
else if (totalIPs > 2) // Calculate for /0-/30
{
hostFirstIP = IPv4AddressHelper.IncrementIPv4Address(networkAddress, 1);
hostLastIP = IPv4AddressHelper.DecrementIPv4Address(broadcast, 1);
hostIPs = totalIPs - 2;
}
return(new SubnetInfo
{
NetworkAddress = networkAddress,
Broadcast = broadcast,
IPAddresses = totalIPs,
Subnetmask = subnetmask,
CIDR = cidr,
HostFirstIP = hostFirstIP,
HostLastIP = hostLastIP,
Hosts = hostIPs
});
}